Substitution+Method+2C

Jordan Young FX-36

Substitution:

5x-4y=7 5(0)-4y=7 -4y=7 -4y/-4=7/-4 y=-1.75

2(-1.75)+6x=22 -3.50+6x=22 +3.50 +3.50 6x=25.50 6x/6=25.50/6 x=4.25

2(-1.75)+6(4.25)=22 -3.50 + 25.50=22
 * //22=22//**

Elimination Method:

5x-4y=7 -5x -5x -4y=7-5x -4y/-4=7/-4 -5x
 * //y=-2.25-5x//**


 * //__1.75=7/4__//**

2y+6x=22 -6x -6x 2y=22-6x 2y/2=22-6x/**//2//**
 * //y=11-3x//**

11-3x=1.75-1.25x -11 -11 -3x=-9.25-1.25x +1.25x +1.25x 2.25x=9.25 2.25x=9.25 2.25x/2.25=9.25/2.25


 * //x=4.111111111//**

2y=22-6(4.111111111) 2y=22-24.66666667 2y=-2.66666667 2y/2=2.66666667/2
 * //y=-1.333333335//**

y=1.33-5/4(4.1) y=1.33-5/16.4
 * //y=-3.67/16.4//**

Fx-11 A=elimination because with more then one number there are more inputs and outputs you have. B= substitution, if you substitute for 1 number you can easily find the other.